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Organic Upconversion Imager with Dual Electronic and Optical Readouts for Shortwave Infrared Light Detection

机译：用于短波红外光检测的双电子和光学读数的有机上限成像器

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摘要

There remains a critical need for large-area imaging technologies that operate in the shortwave infrared spectral region. Upconversion imagers that combine photo-sensing and display in a compact structure are attractive since they avoid the costly and complex process of pixilation. However, upconversion device research is primarily focused on the optical output, while electronic signals from the imager remain underutilized. Here, an organic upconversion imager that is efficient in both optical and electronic readouts, extending the capability of human and machine vision to 1400 nm, is designed and demonstrated. The imager structure incorporates interfacial layers to suppress non-radiative recombination and provide enhanced optical upconversion efficiency and electronic detectivity. The photoresponse is comparable to state-of-the-art organic infrared photodiodes exhibiting a high external quantum efficiency of = 35% at a low bias of = 3 V and 3 dB bandwidth of 10 kHz. The large active area of 2 cm(2) enables demonstrations such as object inspection, imaging through smog, and concurrent recording of blood vessel location and blood flow pulses. These examples showcase the potential of the authors' dual-readout imager to directly upconvert infrared light for human visual perception and simultaneously yield electronic signals for automated monitoring applications.
机译：仍然存在对的是，在短波红外光谱区中操作的大面积成像技术迫切需要。上转换的成像器，在一个紧凑的结构结合光感测和显示是有吸引力的，因为它们避免像素化的昂贵且复杂的过程。然而，上转换器件的研究主要集中在光输出，而从成像器的电子信号保持充分利用。这里，有机上转换成像器是在光学和电子读出高效，人类和机器视觉的能力延伸至1400nm，被设计和验证。成像器结构结合界面层，由此抑制非辐射复合，并提供增强的光学上转换效率和电子探测。光响应是相当先进的最先进的显示℃的高外部量子效率的有机光电二极管红外线; = 35％在℃的低偏置; = 3 V和10kHz的3 dB带宽。 2厘米（2）大有效面积使演示诸如物体检查，通过烟雾成像和血管的位置和血流的脉冲并发记录。这些实例展示了作者的双读出成像器的电势直接上变频的红外光对人的视觉感受和同时产生的电子信号用于自动监视应用程序。

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